添加不同辅料对污泥堆肥腐熟度及气体排放的影响
选择玉米秸秆和木本泥炭两种辅料添加至脱水污泥中进行联合好氧堆肥,研究了秸秆和木本泥炭作为添加剂对污泥堆肥腐熟度和堆肥过程中气体排放（NH3、CH4和N2O）的影响。两种辅料添加量均为初始物料的15%,堆肥在60 L的密闭反应器中共持续35 d。研究结果表明,秸秆作为添加剂与污泥联合堆肥,堆肥产品可以达到卫生标准和腐熟标准。添加秸秆处理整个堆肥过程中累积NH3、CH4和N2O排放量分别为2.2、0.14和0.09 g/kg,NH3和CH4排放主要发生在堆肥的升温期和高温期,N2O排放主要发生在堆肥的后腐熟阶段。添加木本泥炭作为添加剂不能成功启动堆肥,整个堆置过程中未检测到NH3和CH4排放,但是...
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| Published in | 农业工程学报 Vol. 32; no. S2; pp. 241 - 246 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国农业大学资源与环境学院,北京,100193%北京沃土天地生物科技有限公司,北京,100193
2016
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| Subjects | |
| Online Access | Get full text |
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| Abstract | 选择玉米秸秆和木本泥炭两种辅料添加至脱水污泥中进行联合好氧堆肥,研究了秸秆和木本泥炭作为添加剂对污泥堆肥腐熟度和堆肥过程中气体排放（NH3、CH4和N2O）的影响。两种辅料添加量均为初始物料的15%,堆肥在60 L的密闭反应器中共持续35 d。研究结果表明,秸秆作为添加剂与污泥联合堆肥,堆肥产品可以达到卫生标准和腐熟标准。添加秸秆处理整个堆肥过程中累积NH3、CH4和N2O排放量分别为2.2、0.14和0.09 g/kg,NH3和CH4排放主要发生在堆肥的升温期和高温期,N2O排放主要发生在堆肥的后腐熟阶段。添加木本泥炭作为添加剂不能成功启动堆肥,整个堆置过程中未检测到NH3和CH4排放,但是在堆肥前期有大量N2O产生。对于添加秸秆的处理,CH4、N2O和NH3对总温室气体排放的贡献率分别为45%,36%和19%,CH4所占比重最高。 |
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| AbstractList | 选择玉米秸秆和木本泥炭两种辅料添加至脱水污泥中进行联合好氧堆肥,研究了秸秆和木本泥炭作为添加剂对污泥堆肥腐熟度和堆肥过程中气体排放（NH3、CH4和N2O）的影响。两种辅料添加量均为初始物料的15%,堆肥在60 L的密闭反应器中共持续35 d。研究结果表明,秸秆作为添加剂与污泥联合堆肥,堆肥产品可以达到卫生标准和腐熟标准。添加秸秆处理整个堆肥过程中累积NH3、CH4和N2O排放量分别为2.2、0.14和0.09 g/kg,NH3和CH4排放主要发生在堆肥的升温期和高温期,N2O排放主要发生在堆肥的后腐熟阶段。添加木本泥炭作为添加剂不能成功启动堆肥,整个堆置过程中未检测到NH3和CH4排放,但是在堆肥前期有大量N2O产生。对于添加秸秆的处理,CH4、N2O和NH3对总温室气体排放的贡献率分别为45%,36%和19%,CH4所占比重最高。 S141.4%X828; 选择玉米秸秆和木本泥炭两种辅料添加至脱水污泥中进行联合好氧堆肥，研究了秸秆和木本泥炭作为添加剂对污泥堆肥腐熟度和堆肥过程中气体排放（NH3、CH4和N2O）的影响。两种辅料添加量均为初始物料的15%，堆肥在60 L的密闭反应器中共持续35 d。研究结果表明，秸秆作为添加剂与污泥联合堆肥，堆肥产品可以达到卫生标准和腐熟标准。添加秸秆处理整个堆肥过程中累积NH3、CH4和N2O排放量分别为2.2、0.14和0.09 g/kg，NH3和CH4排放主要发生在堆肥的升温期和高温期，N2O 排放主要发生在堆肥的后腐熟阶段。添加木本泥炭作为添加剂不能成功启动堆肥，整个堆置过程中未检测到NH3和CH4排放，但是在堆肥前期有大量N2O产生。对于添加秸秆的处理，CH4、N2O和NH3对总温室气体排放的贡献率分别为45%，36%和19%，CH4所占比重最高。 |
| Abstract_FL | Sewage sludge is an unavoidable by-product of the wastewater treatment process. In recent years, the amount of sewage sludge generated has increased dramatically with the upgrading and expansion of wastewater treatment plants in China. Composting is an effective and economical method for the treatment of solid or semisolid biodegradable waste prior to land application. Stable and mature compost can be applied to soil as an organic amendment to improve plant growth and soil fertility, as well as enhancing the function of soil for carbon sequestration. However, the application of unstable and immature compost may fix nitrogen in the soil and restrict plant growth by competing for oxygen in the rhizosphere and releasing toxic substances. Bulking agents are always required to modify the properties of sewage sludge during composting because of the high moisture contents, low C/N ratio and high density of the material.Emissions of gases such as ammonia (NH3), methane (CH4) and nitrous oxide (N2O) can cause secondary pollution and reduces the environmental benefits of compost. In addition, these substances contribute to nutrient loss from the compost product and therefore lower the quality of the compost product. This study investigated the effects of different additives on maturity and gaseous emissions (NH3, CH4 and N2O) during sewage sludge composting. Two different additives (cornstalks and woody peat) were used to co-compost sewage sludge under aerobic conditions in 60 L reactors for a 35 d period. To create aerobic conditions, the air pump installed with the reactor was operated by an automatic controller with an air flow rate of 0.2 L/(kg?min). In this study,dewatered sewage sludge without anaerobic digestion was collected from a sludge dewatering workshop. The additive amount of both cornstalks and woody peat were 15% raw materials (wet weight). During the experiment, maturity indexes such as temperature, pH value, Electric conductivity, C/N ratio, and germination index were determined, and continuous measurements of gaseous emissions (CH4, N2O, and NH3) were taken. The results showed that adding cornstalks in sewage sludge composting reached the required maturity standard and met the compost sanitation requirements. For the adding of cornstalks, NH3 and CH4 mainly occurred in the mesophilic and thermophilic phase of composting, process, while N2O occurred predominantly in the later period of composting. The cumulative emission of NH3, CH4 and N2O for CS treatment (added cornstalks) was 2.2, 0.14 and 0.09 g/kg, respectively. Over 35 days of composting, the compost temperature of adding woody peat treatment almost approached the ambient temperature, and could not meet the compost sanitation requirements. There was no NH3 emission and little CH4 emission during composting, but lots of N2O occurred in the early period of composting for the treatment of adding woody peat. For the treatment of adding cornstalks, the contribution of NH3, CH4 and N2O to the total greenhouse gas (GHG) emissions was 45%, 36% and 19%, respectively. |
| Author | 袁京 何胜洲 李国学 彭升平 陈是吏 杜龙龙 张地方 徐鹏翔 |
| AuthorAffiliation | 中国农业大学资源与环境学院;北京沃土天地生物科技有限公司 |
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| Author_FL | He Shengzhou Xu Pengxiang Yuan Jing Zhang Difang Peng Shengping Chen Shili Du Longlong Li Guoxue |
| Author_FL_xml | – sequence: 1 fullname: Yuan Jing – sequence: 2 fullname: He Shengzhou – sequence: 3 fullname: Li Guoxue – sequence: 4 fullname: Peng Shengping – sequence: 5 fullname: Chen Shili – sequence: 6 fullname: Du Longlong – sequence: 7 fullname: Zhang Difang – sequence: 8 fullname: Xu Pengxiang |
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| DOI | 10.11975/j.issn.1002-6819.2016.z2.033 |
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| Keywords | 排放控制 composting 秸秆 堆肥 腐熟度 maturity emission control 污泥 木本泥炭 straw sewage sludge woody peat |
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| Notes | Yuan Jing;He Shengzhou;Li Guoxue;Peng Shengping;Chen Shili;Du Longlong;Zhang Difang;Xu Pengxiang;College of Resources and Environmental Sciences, China Agricultural University;Beijing VOTO Biotech Co., Ltd. 11-2047/S |
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| Publisher | 中国农业大学资源与环境学院,北京,100193%北京沃土天地生物科技有限公司,北京,100193 |
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| Snippet | 选择玉米秸秆和木本泥炭两种辅料添加至脱水污泥中进行联合好氧堆肥,研究了秸秆和木本泥炭作为添加剂对污泥堆肥腐熟度和堆肥过程中气体排放（NH3、CH4和N2O）的影响。两种辅料添加量均为初始物料的15%,堆肥在60 L的密闭反应器中共持续35... S141.4%X828; 选择玉米秸秆和木本泥炭两种辅料添加至脱水污泥中进行联合好氧堆肥，研究了秸秆和木本泥炭作为添加剂对污泥堆肥腐熟度和堆肥过程中气体排放（NH3、CH4和N2O）的影响。两种辅料添加量均为初始物料的15%，堆肥在60 L的密闭反应器中共持续35... |
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| SubjectTerms | 堆肥;排放控制;秸秆;污泥;木本泥炭;腐熟度 |
| Title | 添加不同辅料对污泥堆肥腐熟度及气体排放的影响 |
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